978360769 has 2 divisors, whose sum is σ = 978360770. Its totient is φ = 978360768.

The previous prime is 978360767. The next prime is 978360827. The reversal of 978360769 is 967063879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588693169 + 389667600 = 24263^2 + 19740^2 .

It is a cyclic number.

It is not a de Polignac number, because 978360769 - 2¹ = 978360767 is a prime.

It is a super-2 number, since 2×978360769² = 1914379588636542722, which contains 22 as substring.

Together with 978360767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (978360763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489180384 + 489180385.

It is an arithmetic number, because the mean of its divisors is an integer number (489180385).

Almost surely, 2^978360769 is an apocalyptic number.

It is an amenable number.

978360769 is a deficient number, since it is larger than the sum of its proper divisors (1).

978360769 is an equidigital number, since it uses as much as digits as its factorization.

978360769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 978360769 is about 31278.7590706537. The cubic root of 978360769 is about 992.7342598756.

It can be divided in two parts, 9783607 and 69, that added together give a triangular number (9783676 = T₄₄₂₃).

The spelling of 978360769 in words is "nine hundred seventy-eight million, three hundred sixty thousand, seven hundred sixty-nine".